#!/opt/homebrew/bin/python3.13

id = 123
if id == 123:
    print("id is 123")
else:
    print("id is not 123")

l1 = [1,2,3,4]
for i in l1:
    print(i)
i = 0
while i <3:
    i = i+1
    print(i)

for i in range(0, 10):
    pass


l2 = [v*2 +1 if v > 0 else -v*2 +1 for v in l1]
print(l2)

